Wednesday 1 October 2014

D-SHAPE TUNNEL CROSS-SECTION AREA CALCULATION TECHNIQUE

As presented earlier, the short-cut technique for Area calculation of tunnels cross-section, the calculation for Area of D-Shape tunnels has been specified this time.
For calculating the cross-sectional area, most of the time we depend on Auto Cad, as well as various hectic calculations.
From my past experiences and as per knowledge, the short-cut calculation has been developed, called as AREA CBS FACTOR, the calculation has been shown below……..

C/S AREA OF D-SHAPE TUNNEL =  d2 X CBS FACTOR


Where,
d = Dia. Of D-Shape tunnel
CBS FACTOR = 0.8927

From above formula, we can calculate Area instantly with simple multiplication.

For example….
For a 6mt. dia tunnel, the Area has been calculated…
Area = d2 X 0.8927
   62 x 0.8927  ->   32.13 m2
The above calculation can be verified using Auto-Cad or any mathematical technique











area   32.1372 m2
         perimeter   21.4248 m

Monday 15 September 2014

Thursday 11 September 2014


For calculating the cross-sectional area, most of the time we depend on Auto Cad, as well as various hectic calculations.

From my past experiences and as per knowledge, the short-cut calculation has been developed, called as AREA CBS FACTOR, the calculation has been shown below……..


C/S AREA OF HORSE SHOE SHAPE TUNNEL =  d2 X CBS FACTOR


Where,

d = Dia. Of horse shoe shape tunnel

CBS FACTOR = 0.829323611


From above formula, we can calculate Area instantly with simple multiplication.


For example….

For a 6mt. dia tunnel, the Area has been calculated…

Area = d2 x 0.829323611

             62 x 0.829323611 ->   29.85 m2

The above calculation can be verified using Auto-Cad or any mathematical technique